Surf Forecasts:
Karramarro surf forecast from 18 Aug 2026:
- Best quality surf: Thursday 20 Aug, 11AM (local time) - 3.5ft (1.1m), 11s period, NW swell with glassy winds.
- Most powerful swell: Friday 21 Aug, 5AM (local time) - 5ft (1.6m), 11s period, NW swell with 548 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 5AM (local time) - 2.5ft (0.8m), 12s period with NW swell.
Best Forecast Surf Conditions for Karramarro this week:
The surf forecast for Karramarro over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 5AM. The primary swell is predicted to be 0.8m and 12s period with a secondary swell of 0.2m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Karramarro in the next 16 days are 1.6m 11s and forecast to arrive on Friday (Aug 21) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 4s period and expected on Tuesday (Aug 25) at 5AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 20th Aug) | 2.5ft (0.8m) 12s |
| Best Surf | 11AM (Thu 20th Aug) | 3.5ft (1.1m) 11s |
| Most Powerful | 5AM (Fri 21st Aug) | 5ft (1.6m) 11s |
Table - best surf conditions forecast for Karramarro over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's coming down the pipe for the next couple of weeks.
Right off the bat, we've got a long quiet stretch. The first few days are a write-off, with tiny, weak waves and messy winds. Nothing to get excited about until we hit Thursday the 20th. That morning, the wind goes glassy and we see a pulse of 4ft NW groundswell with an 11-second period. The energy reading is moderate (304), and that clean, glassy wind will make for some nice, lined-up waves. This is your best bet for the first week – a true standout. It’s Karramarro, a point break that’s advanced-level and inconsistent, so don't expect a crowd, but don't expect a circus either. It's a fairly exposed spot, and the swell direction from the NW is exactly what it wants to see.
Friday morning the 21st builds on that, with 5ft of NW swell and the same glassy conditions. The energy jumps to a strong 478, so there’s some real push behind it. This is a solid window for the experienced crew. Water temp is sitting at a very unusual 77°, which is much warmer than normal for this time of year – a nice bonus.
After that, we go through a few days of smaller, ordinary surf, with winds that are mostly okay but nothing special. It’s not terrible, but it’s not worth planning your week around.
The next true standout pops up on Tuesday the 1st of September. The afternoon session delivers a 6ft NW groundswell with a long 11-second period and clean, offshore wind from the SW. The energy is very strong (671), and this is the kind of punch that gets the heart pumping. It’s a deep-water groundswell, so expect well-shaped, powerful waves at this point. This is the call of the second week, but it's still a long way out, so keep an eye on it. Wednesday the 2nd will still have good, clean waves in the morning with similar energy (662), but the afternoon gets a bit chopped up by a cross-shore wind.
So, to sum it up: the first week is all about Thursday the 20th and Friday the 21st mornings for clean, glassy conditions on a building swell. The second week, keep your fingers crossed for Tuesday the 1st of September afternoon for the biggest, cleanest, most powerful surf of the entire outlook.
Stay wet,
Rusty
Short Range ForecastLight rain (total 9mm), mostly falling on Thu night. Warm (max 24°C on Tue afternoon, min 18°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 18mm), heaviest on Fri morning. Warm (max 20°C on Fri afternoon, min 17°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | NW 9 | NNW 8 | NW 7 | NW 6 | NNW 6 | NW 13 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NW 9 | NW 9 | NW 8 | NW 8 | NW 7 | NW 7 | NNW 7 | NNW 6 | NNW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 62 | 44 | 7 | 8 | 6 | 104 | 304 | 282 | 515 | 478 | 509 | 384 | 208 | 149 | 132 | 82 | 65 | 44 | 56 | 69 | 32 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | glassy | glassy | cross-on | off | glassy | cross-on | cross-on | glassy | cross-on | off | glassy | glassy | glassy | cross-on | cross-on | cross-off | cross-off | cross | cross-off |
High Tide | 8:53AM3.25m | 9:13PM3.18m | 9:33AM3.01m | 9:57PM2.87m | 10:21AM2.78m | 10:55PM2.61m | 11:30AM2.61m | 00:25AM2.46m | 1:08PM2.57m | 2:02AM2.51m | 2:30PM2.71m | 3:06AM2.69m | 3:24PM2.94m | 3:50AM2.90m | |||||||
Low Tide | 2:57PM0.64m | 3:20AM0.81m | 3:43PM0.93m | 4:06AM1.10m | 4:39PM1.19m | 5:07AM1.34m | 5:56PM1.37m | 6:31AM1.45m | 7:27PM1.36m | 7:55AM1.37m | 8:39PM1.20m | 8:57AM1.18m | 9:30PM0.97m | ||||||||
 | |  | | | | |  |  |  | |  | | |  |  | | | | | | |
 | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — | 7:18 | — | — | 7:20 | — | — | 7:22 | — | — | 7:22 | — | — |
 | — | — | 9:07 | — | — | 9:06 | — | — | 9:04 | — | — | 9:02 | — | — | 9:00 | — | — | 9:00 | — | 8:58 | — |
mm | — | — | — | — | — | — | — | — | 9 | 2 | 2 | 1 | 3 | 3 | 1 | 2 | 3 | 1 | — | — | — |
Temp °C | 22 | 24 | 22 | 22 | 23 | 22 | 22 | 23 | 22 | 18 | 20 | 19 | 18 | 18 | 18 | 19 | 19 | 20 | 20 | 22 | 21 |
Feels °C | 24 | 25 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 18 | 20 | 20 | 19 | 20 | 19 | 19 | 19 | 20 | 19 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | NW 9 | NNW 8 | NNW 5 | NW 6 | WNW 8 | NW 13 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NW 9 | NW 9 | NW 8 | NW 8 | NW 7 | NW 7 | NNW 7 | NNW 6 | NNW 6 |
| kJ | 62 | 44 | 7 | 8 | 6 | 104 | 304 | 282 | 515 | 478 | 509 | 384 | 208 | 149 | 132 | 82 | 65 | 44 | 56 | 69 | 32 |
Swell 2 Height (m) Direction Period (s) | NW 9 | — | NW 7 | WNW 8 | NW 11 | NW 7 | — | — | — | — | — | — | — | — | — | — | — | — | W 8 | W 8 | W 8 |
| kJ | 28 | — | 7 | 6 | 5 | 11 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | WNW 8 | N 8 | NW 7 | WNW 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 10 | NW 9 |
| kJ | — | — | 7 | 1 | 2 | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NNW 6 | — | — | — | — | — | NNW 4 | — | — | — | — | NE 3 | — | — | — | — | — |
| kJ | — | — | — | — | 6 | — | — | — | — | — | 10 | — | — | — | — | 4 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 65 | 558 | 524 | 448 | 498 | 1 | 0 | 37 | 42 | 0 | 42 | 0 | 0 | 0 | 1 | 14 | 51 | 2 | 150 | 151 | 39 |
Best forecast wave conditions in Pais Vasco | |||||||||||||||||||||
Best forecast wave conditions in Spain (Europe) | |||||||||||||||||||||
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Information about the Karramarro Surf forecast
The above surf forecast table for Karramarro provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Karramarro can be found by selecting the local surf guide option on the grey menu. Our Karramarro surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Karramarro) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Karramarro may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Karramarro is 3 km (2 miles) from Zarautz. If you plan a holiday in Pais Vasco, look for hotels and other accommodation in Zarautz. Zarautz has rooms for a wide range of budgets as well as car hire and transport links.
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